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# 131. Palindrome Partitioning
from collections import defaultdict
"""
given: string 's', parition 's' such that every substring of the parition
is a palindrome. return all possible palindrome paritioning of 's'.
"""
class Solution(object):
def __init__(self):
self.memory = defaultdict(list)
def partition(self, s):
"""
:type s: str
:rtype: List[List[str]]
"""
if not s:
return [[]]
if s in self.memory:
return self.memory[s]
ans = []
for i in range(1, len(s) + 1):
if s[:i] == s[:i][::-1]:
for suf in self.partition(s[i:]):
ans.append([s[:i]] + suf)
self.memory[s] = ans
return ans
if __name__ == "__main__":
obj = Solution()
print(obj.partition(s="aab"))
print(obj.partition(s="a"))
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